Comments

In the form of a couple of references in comments from cse.c.
Tested on x86_64-suse-linux, applied on the mainline and 4.7 branch.
2012-10-30 Eric Botcazou <ebotcazou@adacore.com>
* cse.c (hash_rtx_cb): Replace RTX_UNCHANGING_P with MEM_READONLY_P in
head comment.
(hash_rtx): Likewise.

Patch

Index: cse.c
===================================================================
--- cse.c (revision 192988)+++ cse.c (working copy)@@ -2547,7 +2547,7 @@ hash_rtx_cb (const_rtx x, enum machine_m
Store 1 in DO_NOT_RECORD_P if any subexpression is volatile.
If HASH_ARG_IN_MEMORY_P is not NULL, store 1 in it if X contains
- a MEM rtx which does not have the RTX_UNCHANGING_P bit set.+ a MEM rtx which does not have the MEM_READONLY_P flag set.
Note that cse_insn knows that the hash code of a MEM expression
is just (int) MEM plus the hash code of the address. */
@@ -2563,7 +2563,7 @@ hash_rtx (const_rtx x, enum machine_mode
/* Hash an rtx X for cse via hash_rtx.
Stores 1 in do_not_record if any subexpression is volatile.
Stores 1 in hash_arg_in_memory if X contains a mem rtx which
- does not have the RTX_UNCHANGING_P bit set. */+ does not have the MEM_READONLY_P flag set. */
static inline unsigned
canon_hash (rtx x, enum machine_mode mode)